The unique manufacturing design of the CryoELITE vial creates more cap to vial surface contact for an absolute seal. The freestanding vial accommodates an optional 2D Data Matrix Bar Code Bottom Insert (Mfr. No. W985880); which provides a unique identifier for permanent traceability. The bar code bottom insert; which can be purchased separately, easily press fits into the bottom of the vial. The vial bottom format provides unrestricted sample viewing and allows for automated scanning of bar code especially when used with the Wheaton KeepIT-100™ Freezer Box (Mfr. No. W651700 Series). This results in exceptional cap seal performance exceeding DOT standards by an average of 35%, making the CryoELITE vial ideal for the transport of clinical samples. Caps and vials are made from low binding cryogenic, virgin polypropylene.